System Processor; Processor Battery; Sd Memory Card Slot (Pc6 And Pc7 Only) - Keysight Technologies X Series Service Manual

CPU/Disk Drive Troubleshooting
A4 CPU Description
While the A4A1 SRAM Module system memory can be obtained separate from
the A4 CPU board assembly for instruments with the 184-pin DIMM memory
modules, the 200-pin SODIMM memory modules are not field replaceable.
All replacement A4 CPU board assemblies come with the appropriate memory
modules installed.

System Processor

The A4 CPU board assembly uses an Intel Pentium-M series processor chip.

Processor Battery

The A4BT1 Processor battery used is a lithium manganese dioxide coin battery.
It powers the instrument clock and maintains the settings for the CMOS BIOS
configuration.
The A4BT1 Processor battery is field replaceable. See
"Replaceable Parts"

SD Memory Card Slot (PC6 and PC7 only)

The main purpose for the SD memory card is for instrument calibration
database backup.
The SD memory card that is shipped with each new instrument is currently a 16
GB SDHC card. It is shipped with a backup of the instrument's factory
calibration database.
The SD memory card can be removed if needed for security or other reasons
and the instrument will function as normal. The SD card can also be manually
switched to the Lock (read only) position and the instrument will function
normally as well.
While the instrument working calibration database is contained on the E: drive,
if when the instrument first boots up and finds a newer database on the SD
memory card it will prompt the user to select which database to use. This is
intended for use when the A5 disk drive assembly has been changed and the
calibration database needs to be transferred to it.
The SD memory card is field replaceable. See
for the correct replacement part number.
Keysight N9010A EXA Service Guide
for the correct replacement part number.
Chapter 14,
Chapter 14, "Replaceable Parts"
335